Closed-yoke riveter



"April 2, 1929. H NNA 1,707,519

CLOSED YOKE RIVETER Filed Dec. 2, 1925 5 Sheets-Sheet 1 April 2, 1929.Jj HAN-NA 1,707,519

CLOSED YOKE RIVE'I'ER Filed Dec. 2, 1925 3 Sheets-Sheet 2 60 15655 JO/mmm Fil'ed Dec. 2, 1925 s She'ets-Shet Patented Apr. 2, 1929.

UNITED STATES 1,707,519 PATENT OFFICE.

JOHN C. HANNA, F CEICAGO, ILLINOIS, ASSIGNOR TO HANNA ENGINEERING WORKS,OF CHICAGO, ILLINOIS,

A CORPORATION OF ILLINOIS.

GLOSED-YOKE RivErrER.

Application filed December 2, 1925. Serial No. 72,703.-

moved to facilitate the insertion and removal of the members beingoperated upon and to afford riveting action in either of two directions.

It is an object of the present invention to provide a riveter of thischaracter in which the relation of the dies may be'varied to permitready insertion or removal of work and to permit working upon thematerialby a stroke in either direction and at any desired angle.

It is an additional object to provide a riveter of this character whichis adapted for rapid and easy' adjustment and in which the movable diemay be readily swung clear of the fixed die to facilitate handling ofmaterial being worked upon.

It is also an object to provide a construction in which the swinging ofthe die may be accomplished by power and in which the die when inriveting position is positively locked against displacement.

Other and further objects will appear as the description proceeds. v

I have illustrated a preferred embodiment of my invention in theaccompanying drawings in which- Figure 1 is a vertical view, largely insection;

Figure 2 is a view of the-riveter as seen from the right of Figure 1;

Figure 3 is a plan View of the riveter, and Fi ure 4 is a fragmentaryview showing the movable die swung clear and the fixed die rotated tothe position opposite to that shown in Figure 1.

The riveter is rotatably supported upon the base 11 which may be securedto any suitable foundation by bolts passing through holes 12. Therotating carriage 13 rests upon balls 14 carried by the fixed base 11,and the hooks 15 secured to the base 11 by bolts 16 engage the flange 17 of the rotating carriage to prevent displacement.

The carriage 13 is provided with the two standards 18 and 19 from whichthe top cyl-. inder casting 20 is hung by pivot pins 21 and 22. Asclearly shown in the drawings these pivot pins ortrunnions rotate inball hearings in the standards and are pinned to the casting 20. Thepivot pin 22 is provided with the operating lever 23 to which ishingedly secured the lock handle 24. The lock handle 24 operates awire25 secured to the locking pin 26. Pressing the lock handle 24 againstthe handle 23 serves to draw in the locking pin 26 against the spring 27thus unlocking the are 28 and permitting the riveter to be swung aboutthe pivot pins. As best shown in Figure'2, the are 28 is provided with aplurality of openings 29 to receive the locking pin 26 so that theriveter may be swung through a wide range of angular positions.

The castlng 20 has secured to its upper portion by pms 30 and 31, thefixed die supportingmember 32.- The fixed die holder 33 is rotatablyfitted in the member 32. The rear end 34 of the member 33 is fitted intothe bearing member 35, which latter is secured against rotation in themember 32 by the stud 36. The

locking slide 37 is slidable axially of the member 33 by means of thewire 38, which draws the member 37 back against the spring 39. In theposition shown in Figure 1, the locking slide 37 has its ends fitted inthe locking grooves 40. When drawn back against the spring, the lockingslide clears the edge of these grooves and-may be rotated with the fixeddie carrier 33. r

The outer end of the die carrier 33 has keyed thereto a sprocket wlieel41 which is connected by sprocket chain 42 to the sprocket wheel 43. Thesprocket wheel 43- is carried on shaft 44 which is supportedfrom thecasting 20. As shown in Figures 2 and 3'the other end of the shaft 44 isprovided with the operating lever 45, having handle 46. The wire 7 38has its other end connected to the pivoted release member 47 which whenswung towards the handle 46 serves to draw back the locking slide 37 andpermits rotation of the fixed die carrier 33 by means of the handle 46and lever 45.

The piston 48 as shown in Figure 1 is movable vertically relative to thecasting 20 and to the fixed die. This plunger 48 is provided with a diecarrying portion 49 which is guided through a plate 50 secured to thecasting 20 by bolts 51 as shown in Figure 3. The portion 49 carries amovable 'die member 52. The movable die carryingheadf 53 is pivotallyconnected to the plunger 48 by the pivot pin 54.. f The right hand sideof the head 53 is connected by pin 55 to the short toggle link 56 andthe latter is connectedby pin 57 to the long toggle link 58. The longtoggle sition by supplying so th link 58 has a shoulder 59 adapted toengage a shoulder 60 upon the member 53 when the toggle is in a lockedposition as shown 1n Figure 1. The lower end of the link 58 1s pivotedupon pin 61 carried by the plunger 48. The power cylinder 62 is p1votally con nected at 63 to the plunger 48 and its piston rod 64 ispivotally connected at 65 to a lower extension 66 of the long togglelink 58 The long toggle link 58 at its upper portion 1s provided with ahandle 67 for manual operation.

The dividing plate 68 and the lower cyhnder member 69 are secured to thecylinder casting 20 by bolts 70 as shown in Figure 2.

The lower portion of the plunger 48 carries the two piston heads 71 and72 operating 1n the upper and lower cylinders respectively. These pistonheads 71 and 72 are retained 1n place and in their relative position bythe shoulder 7 3 on the piston, the sleeve 74 and the lower nut 7 5.Suitable packing 76 is provided at the upper end of the upper piston anddouble packing 77 is provided upon the divisional plate 68. The pistonhead 71 is provided upon opposite sides with the pack-' ing-78 and 7 9and the piston 72 is provided wit-h similar packing 80 and 81.

In the operation of the riveter the entire upper assembly may be rotatedto any desired position upon the ball bearings 14 and the cyllnder andjaw assembly may then. be tllted by means of riveting operation into thedesired plane. Riveting may be accomplished by the lower die 52 on thelungerby turning the fixed die holder 33 to ring the fixed die towardthe movable die 52. The toggle connection between the jaw 53 and theplunger may be broken and the jaw 53 tilted away from the fixed jaw bypower supplied to cylinder 62. For this riveting operation, the powerstroke is had by supplying compressed air or similar fluid to the undersides of pistons 71 and 72. The movable die is restored to its originalpopower to the opposite side of the pistons.

hen it is desired to rivet with the outer movable die holder'53 as shownin Figure 1, is jaw is swung to the position of the figure and thetoggle looked as shown. The jaw may be swung back each time a piece ofwork is inserted or withdrawn from between the dies. The rivetingoperation is brought about by power applied by introducing fluid underth pressure above the pistons 71 and 72 and the movable die restored toits outer position by power supplied to the lower sides of the pisone.

The entire operatin control of the riveter is located upon one si. e ofthe apparatus and the relation of the parts may be quickly and easilyvaried. The fixed jaw may be quickly turned from one to the other of itspositions without removing work. from between the the handle 23, theplunger 26 befi ing properly released, to bring the axis of the fi jawsand a wide variety of riveting operatlons can be accomplished rapidlyand easily.

I have shown one preferredembodiment of my invention by way ofillustration only and it is to be understood that I contemplate suchchanges and modifications as come within the spirit and scope of theaccompanying clalms.

I claim:

1. In a riveter, a fixed jaw, a movable aw, a plunger carrying themovable jaw, a pivoted connection between the plunger and jaw, andtoggle means for locking the plunger and movable jaw in fixed relation.

2. In a riveter, a fixed jaw, a movable jaw, a plunger carrying themovable jaw, a pivoted connection between the plunger and jaw, linksconnecting the movable jaw and plunger, and abutting portions on themovable jaw and certain of the links whereby the movable jaw ismaintained in position. 3. In a riveter, a fixed jaw, a movable jaw,

a plunger carrying the movable jaw, a pivoted" plunger and aw,

connection between the links connecting the movable jaw and plunger,abutting portions on the movable jaw and certain of the linkswhereby themovable jaw is maintained in position, and means carried by the plungerfor moving the links.

In a riveter, a fixed jaw, a movable plunger carrying a pair of spaceddie holdin members located upon opposite sides of the xed'jaw, and meansadapted to rotate the xed jaw.

5. In a riverter, a fixed jaw, a movable plunger carrying a pair ofspaced die holding members located upon opposite sides of the fixed jaw,means adapted to rotate the fixed jaw and double acting power meansadapted to reciprocate the movable plunger.

6. In a riveter, a fixed jaw, a pair of movable jaws upon opposite sidesof the fixed jaw, means to rotate the fixed jaw 180 to selectively bringit opposite either of the movable jaws, and locking means for retainingthe fixed jaw in either of its operating positions.

7 In a riveter, a fixed member, a fixed jaw, supported from said fixedmember, a plunger operating in said fixed member, a die carrying jaw onsaid plunger located between the fixed member and fixed jaw and adaptedto be forced outwardly toward said fixed jaw, and a second die carryingjaw extending from the plunger and located on e fixed jaw and adapted tobe drawn in toward said jaw.

8. In a riveter, a fixed member, a fixed jaw, supported from said fixedmember, a plunger operating in said fixed member, a die carrying jaw onsaid plunger located between the fixed member and fixed jaw and adaptedto be forced outwardly toward said fixed jaw, and a second die carryingjaw extending from the plunger and located on the oppo site side of thefixed jaw and adapted. to he the opposite side of drawn in toward saidjaw, said second die carrying jaw being pivotally connected to theplunger.

9. In a riveter, a fixed member, a fixed jaw, supported from said fixedmember, a plunger operating in said fixed member, a die carrying jaw onsaid plunger located between the fixed member and fixed jaw and adaptedto be forced outwardly toward said fixed jaw, and a second die carryingjaw extending from the plunger and located on the opposite side of thefixed jaw and adapted to be drawn in to- Ward said jaw, said second, diecarrying jaw being pivotally connected to the plunger, an toggle meansconnecting the second j aw and plunger for locking the jaw in operatingposition. a

10. In a riveter, a fixed base, a supporting member rotatable on saidbase, a double acting power cylinder assembly tiltably supported on saidsupporting member, and a fixed jaw and a pair of movable jaws carried bysaid cylinder assembly.

11. In a riveter, a fixed base, a supporting member rotatable on saidbase, a double acting power cylinder assembly tiltably supported on saidsupporting member, a fixed jaw and a pair of movable jaws-carried bysaid cylinder assembly, and means to bring the fixed jaw in operatingrelation to either of the movable jaws.

12. In a riveter, a

fixed base, a supporting member-rotatable on said base, a power cylin- Ider assembly tiltably supported on said supd porting member and fixedand movable jawscarried by said cylinder assembly, the movable jawextending beyond the fixed jaw and being provided with means to swing itaway a from the fixed jaw. s

Signed at Chicago, I]linois, this 25th day of November, 1925. i

a JOHN C. HANNA.

